Door check



H. M. DAVIDSON ADOOR CHECK July l2, 1949.

2 Sheets-Sheet 1 Filed Sept. 24, 1946 my ,w

H. M. DAVIDSON July 12, 1949.

' DOOR CHECK 2 Sheets-Sheet 2 Filed Sept. 24, 1946 Patented `uly 12, 1949 wel@ DOQR CHECK Howard M. Davidson, Detroit, Mich., assignor to Carey-McFallVr Company, lfhiladelphia, Pak a,

This ini/.ention` nejlates to ldotar',clfiecjks.. for automobiles and the like; and `particularly to what, isv kwown as the full open locl'rftype, wherein. the swingingmotion of the doorinopefning is 'hecked jf tp-rior tothe door attaining itlsfull olpenpostion', and wherein the swingingy motionis .cornip-lfeytelyfl arrested when the door attainsr` its fully open position; and wherein the door is prevented from swinging out of its fully open position into a partially closed position unintentionally.

The virtue of the present invention lies in the simplicity and high eiciency of the structure and in the fact that substantially all the metal parts of the structure can be readily produced by die stamping from sheet metal and require no subsequent machining.

In the accompanying drawings:

Fig. 1 is a sectional plan view of a portion of an automobile body and door, with the door locked in its fully open position;

Fig. 2 is a, view similar to Fig. 1 showing the door fully closed;

Fig. 3 is a vertical sectional elevation taken on the line 3--3, Fig. 1;

Fig. 4 is a transverse Vertical sectional view taken on the line 4--4, Fig. 3;

Fig. 5 is a view s-imilar to Fig. 4, showing the relative positions of the elements just prior to attaining the relationship shown therein;

Fig. 6 is a view similar to Fig. 1 showing a modification of the structure;

Fig. 7 is a rear elevation of the essential elements shown in Fig. 6; and

Fig. 8 illustrates the elements prior to attaining the relationship shown in Fig. 6.

As shown in Fig. 1, a portion of the hollow body of an automobile, adjacent the hinge side of a door thereof, is shown at A as comprising an outer plate al, an inner plate a2 with a space a: therebetween, and a transverse jamb plate a3 connectlng the outer plate al and the inner plate a2 integrally.

A portion of the door B is illustrated as comprising an outer plate bl, an inner plate b2 and a side plate b3 connecting the inner and outer plates.

One of the door hinges -is shown in broken lines at C. operatively connecting the body A and the door B is a check link I, one end of which is pivotally connected at 2 to a bracket 3 secured to the plate b3 of the door B.

The opposite end of the check link I passes through a horizontal slot 4 in the jamb plate a3 of the body A and is adapted to slide through a horizontal slot 5 in a check supporting plat@ 6 whims (C11. lifi-Ssf) lisidlv. Stellldt the. eddy., Sleatere belliedthe iamb'll'flte as merger.

'The .ndnf the'. Checllirils I. 01212051@ the pivid: endl` of 'said link, isfi andfisfjiormedasa T- slarefij hea@- 'semer-.lenga Pair-0i- Qate 8921851.61 spectivel'y,` extending,f laterally, in. opposit direc* tiene from the' body'e' of the ii'nk'l, at rightajrlgies, wehe-legaliteit@ centerline et the liek l.-

" Spaced inwardf thelinkl from the ears 8, 8 along and projecting laterally in opposite directions from the opposite side edges II, II of the link I is a pair of cam lugs I2, I2 which lie in the same plane as the ears 8, 8 and the body 9 of the link I, with recesses I3, I3 between the ears 8, 8 and the cam lugs I2, I2 respectively.

The link I extends between a pair of pins I4, I4 which are provided at their opposite ends respectively with rubber or other resilient supports I5, I5 which, in the present instance, take a circular thick washer-like or bushing form, with each pair of the resilient supports I5, I5 spaced apart axially of an associated pin I4 and providing an annular groove I6 therebetween in which the link I is slidably mounted.

The pins I4, I4 and their associated resilient supports I5, I5 are conned in a suitable housing I'I which closely lits and prevents bodily movement of the resilient supports I5, I5.

The housing Il is provided with laterally extending flanges I8, I8 which rest against and are secured to the plate 'Ii by rivets I9, I9 or the like.

Normally, the elements assume the relative positions shown in Fig. 2. As the door is opened, the link I is drawn through the housing, between the pins I4, I4, in the annular grooves I6, I8, until the cam lugs I2, I2 engage the pins I4, I4; whereupon continued outward movement of the link I causes the lugs I2, I2 to spread the pins I 4, I 4 and compress the portions of the resilient mountings I5, I5 lying outside said pins against the inside surface of the housing Il until the lugs I2, I2 pass completely beyond the pins I4, I4'. The resilient mountings I5, I5 then react to force the pins I4, I4 into the recesses I3, I3 in the link head 1. Immediately thereafter the ears 8, 8 engage the pins I 4, I 4 and arrest the outward movement of the link I, thereby holding the door in its now fully opened position. The portions of the resilient mountings I5, I5 lying between the pins I4, I4 and the closure plate 20 lying between the housing I1 and the housing supporting plate 6 yield under the impact of the ears 8, 8 with the pins I4, I4 and dampens the shock attending the engagement of the ears 8, 8

3 with the pins I4, I4, if and when the door B is swung open violently.

As shown in Fig. 6, the housing Ila is provided with trunnions 2 l, 2| pivotally mounted in brackets 22, 22 secured to the jamb plate a4 of the body AI, so that the pins l4'a Ida will be disposedon a line at right angles to the longitudinal axis of the check line la at all times as the door Bl swings from a fully closed to a full open position and vice versa, thus avoiding any and all tendency for the link to bind as it moves through the housing Ila. The housing I'la is at all times self-aligning with respect to the link la.

I claim:

1. A door check comprising a at elongated link, a housing having slots in opposite walls respectively for longitudinal movement of said link therethrough, check pins in said housing in engagement with opposite edges respectively of said link, rubber rings on opposite ends respectively of each pin with an annular recess therebetween and affording resilient mountings for said pins firmly confined in said housing, and lateral projections on the opposite edges respectively of said link for engagement with said pins when said link is moved longitudinally through said annular recesses.

2. A door check comprising an elongated link,

means for pivotally attaching one end of said link to a swinging door, a housing adapted for longitudinal movement of said link therethrough, means for pivotally supporting said housing adjacent said door, check pins in said housing in engagement with opposite edges respectively of said link, annular resilient mountingsior said pins embracing the same at respectively opposite sides of the link and iirmly conned in said housing, relatively spaced cams and stop ears on opposite edges of said link to engage said pins and compress said mountings during longitudinal movement of said link through said housing.

HOWARD M. DAVIDSON.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 2,032,600 Smith Mar. 3, 1936 2,043,976 Schonitzer June 9, 1936 2,155,167 Lefevre Apr. 18, 1939 2,290,331 Jacobs July 21, 1942 2,321,409 Moore June 8, 1943 

